/Engine/Source/Runtime/Interchange/Engine/Public/InterchangeManager.h
Delete the specified AsyncHelper and remove it from the array that was holding it.
void ReleaseAsyncHelper ( [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [UE::Interchange::FImportAsyncHelper](API\Runtime\InterchangeEngine\FImportAsyncHelper), ESPMode::ThreadSafe > AsyncHelper )